/Engine/Source/Developer/Localization/Public/LocalizationTargetTypes.h
struct FLocalizationExportingSettings
ELocalizedTextC...
CollapseMode
How should we collapse down text when exporting to PO?
EPortableObject...
POFormat
Which format of PO file should we use?
bool
ShouldAddSourceLocationsAsComments
Should source locations be added to PO file entries as comments? Useful if a third party service doesn't expose PO file reference comments, which typically store the source location.
bool
ShouldPersistCommentsOnExport
Should user comments in existing PO files be persisted after export? Useful if using a third party service that stores editor/translator notes in the PO format's comment fields.